I am curious if anyone else is using any of these two tilling window managers, and has the same problem - the shift key is not working. Precisely, some key bindings like Mod+Shift+Enter for launching the terminal, or Mod+shift+1 for moving the focused window to another workspace.
Other combinations not related to scrotwm or xmonad like shift+delete works just fine.
I am using siduction amd64 lxde.
Maybe this helps?
$ cat /etc/default/keyboard
# KEYBOARD CONFIGURATION FILE
# Consult the keyboard(5) manual page.
XKBMODEL="linux"
XKBLAYOUT="us"
XKBVARIANT=""
XKBOPTIONS="lv3:ralt_switch,compose:lwin,grp:alt_shift_toggle"
BACKSPACE="guess"